Oo-err, - the examinations sound fantastic!
Good luck Tom, I hope it all goes well, with just the right amount of discomfort. A mate of mine had a similar op earlier in the year, it all went well and he wanted to go back to work after about 3 days, his mrs had to hide the car keys. In the end he was back in the saddle after a fortnight, as recommended, and is right as ninepence now.
H